".. gimmicky OS's..."
By that I'm assuming you mean anything created after Windows 7. So let's look at the gimmicks. A new Start Screen and Metro Apps.
Let's address that new Start Screen. Yes, for the cumulative 5 minutes a day I spend on the start screen, I am really annoyed. I either see what I want and click it, or I start typing and locate the function / app I need in less than 2 seconds. Yes, this is a bother in contrast to the Windows 7 start screen where I pressed the Win key, clicked on what I wanted as a smaller icon or started typing to initiate a search or navigated a mess of hierarchical menus. Which is much more inconvenient than Windows XP where you hit the Win key and then had to navigate a mess of hierarchical menus.
Now for the Metro apps. Full screen apps suck, granted. I really want to be able to focus on more than one application on my screen at a time. I have dual monitors, so less of an issue for me. But the majority of Metro apps are trash anyway. Office, Internet Explorer, etc... are desktop apps. In any case, Metro apps do support splitting a screen. And again, these are apps that did not exist in Win 7, so take them or leave them.
Disclaimer: I run Linux on all my home and on any other computer I have the option to run it. The game selection is poor and the graphics perform worse than if I just shelled out the $99 for Windows. But I am a idealistic SOB and will always support public domain/opensource and "Go Bernie". At work, I use MS products and will migrate anything to the MS platform when possible. I could go the other way in my work environment, but then who the hell would my boss call when it all went to shit?